noun
    
    plural -sheds
    
    [count] a time when an important change happens - usually singular
    
    
    
    
    
    a line of hills or mountains from which rivers drain :a ridge between two rivers
    
    b chiefly US :the area of land that includes a particular river or lake and all the rivers, streams, etc., that flow into it
    
    
    
    Brit :the time of day after which television programs not appropriate for children may be broadcast